通过上述例题可以发现，英语代词虽然数量不多，但是种类却不少，且各种代词有性、数、格、人称之别，必须在平时学习多注意总结和归纳，才可以正确的把握其用法。下面通过一些练习题来加深印象。

练习题

1 First and most important is its extraordinary receptive
and adaptable heterogeneousness --- the ease
and readiness with that has taken to itself material 1.__________
from almost everywhere in the world and has made
the old elements of language its own.

2 In most advanced English courses, time is usually
set aside for conversation lessons. This can be 2.__________
the most difficult and most rewarding of all
the lessons the teacher is called upon to conduct.

3 They gain such mental food that few companions 3.__________
can supply. Even while resting from their labors
they are, through the books they read, equipping
themselves to perform those labors more inefficiently.

4 Before the time of Galileo, learned men believed
that large bodies fell more rapidly towards the earth
than small one, because Aristotle said so. 4.__________

5 But Galileo, going to the top of the Leaning Tower
of Pisa, let fall two unequal stones, and proved to some
friends, he had brought there to see his experiment, 5.__________
that Aristotle was in error.

6 Deep in the dense forest these tourists finally
found the place where they visited ten years ago. 6.__________

7 It was a beautifully decorated ancient house which 7.__________
door opened to the east.

8 What has been left was a table in one corner of
the living-room which two legs were broken. 8.__________

9 Some people think of the protection of our
environment as the mere protection of a few
animals and flowers. Actually natural conversation
is far from that some people imagine to be. 9.__________

10 It has become a question of whether man can
survive at all in the world in which he is creating. 10.__________

答案：
1.that=>which
2.this=>these
3.that =>which
4.so=>that
5.he 前加 who
6.where=>which
7.which=>whose
8.which=>whose
9.that=>what
10.in which 的 in去掉